2 layers100 × 130.1 mm
BerlinUhr
designer2k2/BerlinUhr
Berlin Uhr or Mengenlehreuhr, a fancy retro style clock
62 parts7GPL-3.0
2 layers120 × 92.8 mm
IssaScope v0.2
MaximeZimmermann/IssaScopeEthoscope for optogenetics behavioural essays
- Size
- 120 × 92.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 33
- Nets
- 64
- Pads
- 199
- Tracks, vias
- 573, 6
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 27 Jan 2024
- Updated
- 23 May 2024
Overview
IssaScope v0.2 is an open-source printed circuit board by MaximeZimmermann, from the MaximeZimmermann/IssaScope repository on GitHub. It is a 2-layer board of 120 × 92.8 mm with 33 parts on 64 nets, routed with 573 tracks and 6 vias.
It is built around the LM2596S-12 and TLC5947DAP. Its parts include 17 connectors, 3 ICs, 2 capacitors, 2 resistors and 2 switches. It belongs with the ESP32 boards of this library.
Main components
2
LM2596S-12
TO-263-5L-20℃~+70℃ 1 12V 170kHz 2mA 3A 4.5V~40V Buck Buck Built-in Fixed No TO-263-5L DC-DC Converters ROHSGRDC-DC Converters
TLC5947DAP
HTSSOP-32-EP-6.1mm-40℃~+85℃ 2% 24 30MHz 30mA 3V~5.5V Built-in Over-Temperature Protection (OTP) PWM HTSSOP-32-EP-6.1mm LED Drivers ROHSTexas InstrumentsLED Drivers
README
README.md
Issa Scope v0.2
An ethoscope for optogenetics behavioural essays
developed by M.J.Y. Zimmermann
This project is licensed under the GNU General Public License v3.0
The hardware is licensed under the CERN OHL v1.2
Introduction
Ethoscope
The Ethoscope consists of 15mm extruded aluminium bars purchased from MakerBeam (XL profile), and 3D printed parts.
PCB
Dedicated PCBs for all electronics components contained in the scope base and platform stimulating LEDs can be found here along with detailed instructions to reproduce and adapt them.
Ethoscope Main Board
The PCB is built around an ESP32, a microcontroller which exchanges signals with the recording setup, and the TLC5947 LED driver, which allows linear intensity control over all stimulating lights. The microcontroller runs on C++ however, users do not need to interfere with the source code as we provide an intuitive and interactive Graphical User Interface [blocked] (GUI), from which all functions and variables can be manipulated.
Left: PCB schematics for the IssaScope v0.2, Middle: PCB layout for manufacturing, Right: Rendering of the board populated with electronics components
The board provides connections via Molex JST plugs for 4 * four LED channels meant to be used for 4 * four distinct optogenetics light sources.
It also provides ports for base illumination for both white and infra red lights, designed for providing light below the samples.
Remaining ports provide access to unuse GPIO pins on the microcontroller for further upgrade (I/O signals, sensors, motors, etc.)
The board takes a 24V input, a tension above this value will result in damaging the board components.
This repository contains detailed assembly instructions and an operation manual for the Scope electronics assembly. The bill of material details all components required.
To simplify the wiring assembly, a customed circuit board has been designed. PCB prototype companies (i.e. JLCPCB) will only require the gerber.zip folder to be sent to them for production.
Microcontroller
Driver_Installation
IssaScope v0.2 firmware runs on an Espressif ESP32 board and requires the USB to UART bridge CP210x driver, which can be downloaded here.
Once the driver has been installed, users can upload and modify the microcontroller code through the Arduino IDE (Integrated Development Environment).
Arduino_IDE
The ESP32 microcontroller runs a C++ code which can be accessed via the Arduino IDE, which can be downloaded here.
Once the IDE is installed, users needs to install the ESP32 board library:
In the Arduino IDE, go to File > Preferences
Enter the following link into the Additional Board Manager URLs field:
https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json
Then click on the OK button.
Next, open the Boards Manager. Go to Tools > Board > Board Manager...
Search for ESP32 and press install button for the ESP32 by Espressif Systems.
Then click on the Install button.
Finally and in a smiilar manner the library Adafruit_TLC5947 needs to be installed.
Compiling_the_code
Within the Arduino IDE, user needs to select the FQBN (Fully Qualified Board Name) on which the code will be compiled for.
Here the ESP32 Dev Module needs to be selected.
Go to Tools > Board > esp32 > ESP32 Dev Module
The board name should be displayed as shown.
GUI
A Graphical User Interface (GUI) dedicated to this project was designed using the python PyQt6/PySide6 libraries. The entire script can be found here.
PyQt
githubusercontent
Software
The python script for the GUI can be run directly from a python environment, or run from a .exe file which can be found here [blocked]
On the main screen, Users can fi
To-Do-List
- Find suitable material for close up hanging LEDs
- Make an equivalent to the GUI using Bonsai
Parts
33| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | Conn_01x04_Socket | Connector_JST:JST_XH_S4B-XH-A_1x04_P2.50mm_Horizontal | J27, J28, J29, J30, J31, J32, J33, J34, J35 |
| 6 | Conn_01x05_Socket | Connector_JST:JST_XH_S5B-XH-A_1x05_P2.50mm_Horizontal | J1, J2, J3, J4, J5, J6 |
| 4 | MountingHole | MountingHole:MountingHole_3mm | H1, H2, H3, H4 |
| 1 | 1N5822 | Diode_THT:D_DO-201AD_P15.24mm_Horizontal | D1 |
| 1 | 1kΩ | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P15.24mm_Horizontal | R1 |
| 1 | 220μF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C2 |
| 1 | 24 V | Connector_BarrelJack:BarrelJack_Horizontal | J36 |
| 1 | 2kΩ | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P15.24mm_Horizontal | R2 |
| 1 | 33μH | Inductor_THT:L_Radial_D6.0mm_P4.00mm | L1 |
| 1 | 680μF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C1 |
| 1 | ESP32-DEVKITC-32D | Maxime:MODULE_ESP32-DEVKITC-32D | U1 |
| 1 | LM2596S-12 | Package_TO_SOT_THT:TO-220-5_P3.4x3.7mm_StaggerOdd_Lead3.8mm_Vertical | U3 |
| 1 | LOGO | Maxime:Spiky175h | G*** |
| 1 | Power Switch | Connector_JST:JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | SW1 |
| 1 | Reset Button | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx39-2LFS | SW2 |
| 1 | TLC5947 | Maxime:Maxi_TLC5947 | U2 |
| 1 | Trigger | Maxime:BNC_Socket_TYCO-AMP_LargePads | J26 |
Questions
How big is the IssaScope v0.2 PCB?
It measures 120 × 92.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the IssaScope v0.2 use?
33 parts, built around the LM2596S-12 and TLC5947DAP. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the IssaScope v0.2 KiCad files?
From the MaximeZimmermann/IssaScope repository on GitHub, at the commit this page was made from: the board is PCB/IssaScope_v0.2.kicad_pcb and its schematic PCB/IssaScope_v0.2.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the IssaScope v0.2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask MaximeZimmermann before reusing the design.
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